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feat(dot/network): Add warp sync request handler (#4186)
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,40 @@ | ||
// Copyright 2024 ChainSafe Systems (ON) | ||
// SPDX-License-Identifier: LGPL-3.0-only | ||
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package messages | ||
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import ( | ||
"fmt" | ||
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"github.com/ChainSafe/gossamer/lib/common" | ||
"github.com/ChainSafe/gossamer/pkg/scale" | ||
) | ||
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// WarpProofRequest is a struct for p2p warp proof request | ||
type WarpProofRequest struct { | ||
Begin common.Hash | ||
} | ||
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// Decode decodes the message into a WarpProofRequest | ||
func (wpr *WarpProofRequest) Decode(in []byte) error { | ||
return scale.Unmarshal(in, wpr) | ||
} | ||
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// Encode encodes the warp sync request | ||
func (wpr *WarpProofRequest) Encode() ([]byte, error) { | ||
if wpr == nil { | ||
return nil, fmt.Errorf("cannot encode nil WarpProofRequest") | ||
} | ||
return scale.Marshal(*wpr) | ||
} | ||
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// String returns the string representation of a WarpProofRequest | ||
func (wpr *WarpProofRequest) String() string { | ||
if wpr == nil { | ||
return "WarpProofRequest=nil" | ||
} | ||
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return fmt.Sprintf("WarpProofRequest begin=%v", wpr.Begin) | ||
} | ||
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var _ P2PMessage = (*WarpProofRequest)(nil) |
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,79 @@ | ||
// Copyright 2024 ChainSafe Systems (ON) | ||
// SPDX-License-Identifier: LGPL-3.0-only | ||
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package network | ||
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import ( | ||
"errors" | ||
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"github.com/ChainSafe/gossamer/dot/network/messages" | ||
"github.com/ChainSafe/gossamer/lib/common" | ||
libp2pnetwork "github.com/libp2p/go-libp2p/core/network" | ||
"github.com/libp2p/go-libp2p/core/peer" | ||
) | ||
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// WarpSyncProvider is an interface for generating warp sync proofs | ||
type WarpSyncProvider interface { | ||
// Generate proof starting at given block hash. The proof is accumulated until maximum proof | ||
// size is reached. | ||
generate(start common.Hash) (encodedProof []byte, err error) | ||
} | ||
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func (s *Service) handleWarpSyncRequest(req messages.WarpProofRequest) ([]byte, error) { | ||
// use the backend to generate the warp proof | ||
proof, err := s.warpSyncProvider.generate(req.Begin) | ||
if err != nil { | ||
return nil, err | ||
} | ||
// send the response through pendingResponse channel | ||
return proof, nil | ||
} | ||
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func (s *Service) handleWarpSyncStream(stream libp2pnetwork.Stream) { | ||
if stream == nil { | ||
return | ||
} | ||
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s.readStream(stream, decodeWarpSyncMessage, s.handleWarpSyncMessage, MaxBlockResponseSize) | ||
} | ||
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func decodeWarpSyncMessage(in []byte, _ peer.ID, _ bool) (messages.P2PMessage, error) { | ||
msg := new(messages.WarpProofRequest) | ||
err := msg.Decode(in) | ||
return msg, err | ||
} | ||
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func (s *Service) handleWarpSyncMessage(stream libp2pnetwork.Stream, msg messages.P2PMessage) error { | ||
if msg == nil { | ||
return nil | ||
} | ||
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defer func() { | ||
err := stream.Close() | ||
if err != nil && errors.Is(err, ErrStreamReset) { | ||
logger.Warnf("failed to close stream: %s", err) | ||
} | ||
}() | ||
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if req, ok := msg.(*messages.WarpProofRequest); ok { | ||
resp, err := s.handleWarpSyncRequest(*req) | ||
if err != nil { | ||
logger.Debugf("cannot create response for request: %s", err) | ||
return nil | ||
} | ||
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if _, err = stream.Write(resp); err != nil { | ||
logger.Debugf("failed to send WarpSyncResponse message to peer %s: %s", stream.Conn().RemotePeer(), err) | ||
return err | ||
} | ||
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logger.Debugf("successfully respond with WarpSyncResponse message to peer %s with proof %v", | ||
stream.Conn().RemotePeer(), | ||
resp, | ||
) | ||
} else { | ||
logger.Debugf("received invalid message in warp sync handler: %v", msg) | ||
} | ||
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return nil | ||
} |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,110 @@ | ||
// Copyright 2024 ChainSafe Systems (ON) | ||
// SPDX-License-Identifier: LGPL-3.0-only | ||
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package network | ||
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import ( | ||
"fmt" | ||
"testing" | ||
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"github.com/ChainSafe/gossamer/dot/network/messages" | ||
"github.com/ChainSafe/gossamer/lib/common" | ||
"github.com/libp2p/go-libp2p/core/peer" | ||
"github.com/stretchr/testify/require" | ||
gomock "go.uber.org/mock/gomock" | ||
) | ||
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func TestDecodeWarpSyncMessage(t *testing.T) { | ||
t.Parallel() | ||
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// Basic WarpProofRequest | ||
testWarpReqMessage := &messages.WarpProofRequest{ | ||
Begin: common.MustBlake2bHash([]byte("test")), | ||
} | ||
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// Test encoding | ||
reqEnc, err := testWarpReqMessage.Encode() | ||
require.NoError(t, err) | ||
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//Expected encoded message compared with substrate impl | ||
require.Equal(t, []byte{ | ||
0x92, 0x8b, 0x20, 0x36, 0x69, 0x43, 0xe2, 0xaf, 0xd1, 0x1e, 0xbc, | ||
0xe, 0xae, 0x2e, 0x53, 0xa9, 0x3b, 0xf1, 0x77, 0xa4, 0xfc, 0xf3, 0x5b, | ||
0xcc, 0x64, 0xd5, 0x3, 0x70, 0x4e, 0x65, 0xe2, 0x2, | ||
}, reqEnc) | ||
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// Test decoding | ||
testPeer := peer.ID("me") | ||
msg, err := decodeWarpSyncMessage(reqEnc, testPeer, true) | ||
require.NoError(t, err) | ||
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req, ok := msg.(*messages.WarpProofRequest) | ||
require.True(t, ok) | ||
require.Equal(t, testWarpReqMessage, req) | ||
} | ||
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// createServiceWithWarpSyncHelper creates a basic service with warp sync handler support | ||
func createServiceWithWarpSyncHelper(t *testing.T, warpSyncProvider WarpSyncProvider) *Service { | ||
t.Helper() | ||
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config := &Config{ | ||
BasePath: t.TempDir(), | ||
Port: availablePort(t), | ||
NoBootstrap: true, | ||
NoMDNS: true, | ||
WarpSyncProvider: warpSyncProvider, | ||
} | ||
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srvc := createTestService(t, config) | ||
srvc.noGossip = true | ||
handler := newTestStreamHandler(decodeSyncMessage) | ||
srvc.host.registerStreamHandler(srvc.host.protocolID, handler.handleStream) | ||
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return srvc | ||
} | ||
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func TestHandleWarpSyncRequestOk(t *testing.T) { | ||
t.Parallel() | ||
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// Creates warp sync provider mock to generate proofs with the expected result | ||
expectedProof := []byte{0x01} | ||
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ctrl := gomock.NewController(t) | ||
warpSyncProvider := NewMockWarpSyncProvider(ctrl) | ||
warpSyncProvider.EXPECT().generate(common.EmptyHash).Return(expectedProof, nil).Times(1) | ||
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// Initiate service using the warp sync provider mock | ||
srvc := createServiceWithWarpSyncHelper(t, warpSyncProvider) | ||
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// Handle request and check resulting proof | ||
req := messages.WarpProofRequest{ | ||
Begin: common.EmptyHash, | ||
} | ||
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resp, err := srvc.handleWarpSyncRequest(req) | ||
require.NoError(t, err) | ||
require.Equal(t, expectedProof, resp) | ||
} | ||
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func TestHandleWarpSyncRequestError(t *testing.T) { | ||
t.Parallel() | ||
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// Creates warp sync provider mock to generate proofs with the expected erro | ||
expectedError := fmt.Errorf("error generating proof") | ||
ctrl := gomock.NewController(t) | ||
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warpSyncProvider := NewMockWarpSyncProvider(ctrl) | ||
warpSyncProvider.EXPECT().generate(common.EmptyHash).Return(nil, expectedError).Times(1) | ||
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// Initiate service using the warp sync provider mock | ||
srvc := createServiceWithWarpSyncHelper(t, warpSyncProvider) | ||
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// Handle request and check resulting error | ||
req := messages.WarpProofRequest{ | ||
Begin: common.EmptyHash, | ||
} | ||
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resp, err := srvc.handleWarpSyncRequest(req) | ||
require.Nil(t, resp) | ||
require.ErrorIs(t, err, expectedError) | ||
} |
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